17944893458 has 6 divisors (see below), whose sum is σ = 26917624359. Its totient is φ = 8972352006.

The previous prime is 17944893451. The next prime is 17944893469. The reversal of 17944893458 is 85439844971.

It can be written as a sum of positive squares in only one way, i.e., 8972446729 + 8972446729 = 94723^2 + 94723^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=94723.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17944893458.

It is not an unprimeable number, because it can be changed into a prime (17944893451) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 142085 + ... + 236807.

Almost surely, 2^17944893458 is an apocalyptic number.

17944893458 is a deficient number, since it is larger than the sum of its proper divisors (8972730901).

17944893458 is an frugal number, since it uses more digits than its factorization.

17944893458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189448 (or 94725 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 62.

The spelling of 17944893458 in words is "seventeen billion, nine hundred forty-four million, eight hundred ninety-three thousand, four hundred fifty-eight".